Home / 1,541.02-2,126.45-911.58

Finding the Fourth Proportional to 1,541.02, 2,126.45 and 911.58

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Solution

The fourth proportional to 1,541.02, 2,126.45 and 911.58 is: 1,257.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.02 : 2,126.45 = 911.58 : x
  2. Step 2: Convert to fraction form
    1,541.02/2,126.45 = 911.58/x
  3. Step 3: Cross multiply
    1,541.02x = 2,126.45 × 911.58
  4. Step 4: Simplify right side
    1,541.02x = 1,938,429.29
  5. Step 5: Solve for x
    x = 1,938,429.29/1,541.02
  6. Step 6: Final answer
    x = 1,257.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.